Car-brass mold.



G. L. HOPFER.

GAB, BRASS MOLD.v

APPLIUATIUN FILED MAR. s, 1909.

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GAR BRASS MOLD.

AAAAAAAA 19N PPPPPP AR. 33333 9. Y 956,638, Patented May 3, 1910.

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GEORGE LINTON KOFFER, OF LAUREL, MISSISSIPPI.

CAR-BRASS MOLD.

Specification of Letters Patent.

Application filed March 3, 1909.

Patented May 3, 1910.

Serial No. #181,0934

To all whom 'it may concern:

Be it known that I, GEORGE L. Homme, ya citizen of the United States,residing at Laurel, in the county of Jones and State of Mississippi,have invented a new and useful Car-Brass Mold, of which the following isa specification.

The principal object of the present invention is to provide an improvedmold for casting journal bearings or brasses for car wheel axles to theend that a large number of brasses may be manufactured in a short time.

A further object of the invention is to provide a novel form of mold inwhich any desired number of sections may be assembled together,-thesections being of precisely the same construction and so arranged thatone face of each section shall form the back of the brass while theoppo-site face of the same section shall form the concave journalreceiving face of another brass.

A still further object of the invent-ion is' to provide a mold of thistype in which the mold sections are provided with interchangeablemembers for forming the concave journal receiving faces so that brassesof the ordinary Master Car Builders type, or selfoiling, or lead-linedbrasses may be made as desired.

With these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts, hereinafter fully described,'illustrated inthe accompanying drawings, and particularly pointed out in the appendedclaims, it being understcodthat various changes in the form,proportions, size and minor details of the structure may be made withoutdeparting from the spirit or sacrificing any of the advantages of theinvention.

In the yaccompanying drawings z-Figure 1 is a lon itudinal sectionalview illustrating a num er of mold sections assembledin readiness forthe casting operation. Fig. 2 is a sectional plan view of the same. Fig.3 is a sectional plan view of one of the sections showing the samefitted in, lreadiness for the castingof a' self-oiling brass. Fig. 4: isa similar View showing the mold section adjusted in readinessfor the`casting of a Lead-lined brass. Fig. is a' detaiperspective'view lookingatrone face vofthe mold section. Fig. 6.is a. similarview looking at theopposite face thereof. V is a :detail perspective view of the convexsection employed in the molding of self-oiling brasses. Figs. 8 and 9are detail views of the members used in the molding of lead-linedbrasses.

Similar numerals of reference are einployed to indicate thecorresponding arts throughout the several figures of the `rawings.

Each of the main sections of which the multiple mold is built up is ofprecisely the same construction being of enerally rectangular contourand provided with a vertical central web 10 of practically uniform-thickness except at the top where it is recessed as indicated at 11 toform the rib which is arranged at the end of the brass and in practiceis disposed at that end of the brass adjacent the car wheel. The inneror molding surface of the web has small ribs 13 to form a panel whichmay contain a name plate or other identifyingmarks, and preferably thereare a pair of small lugs 14 which extend from the web near the upper andlower ends thereof to form oil passages in the brass, although these arenot essential. At the opposite sides of the central web the walls aremuch thicker as indicated at 14 and the inner faces of these walls aredisposed at an angle to each other in order to form the angular upperfaces of the brass. These walls also are recessed as indicated at 16 inalinement with the recess 11 to form the end rib of the brass. On one ofthe walls 14C of this face ofthe molding section, which for conveniencemay be termed the rear face, is a projecting rib 17 that extends fromthe top of the section down to a point adjacent the lower end thereofand there terminates in an abrupt horizontal shoulder 18 that extendsback to the plane of the' rear wall of the rib 15.

The rib 17 as shown more clearly in Fig. 6 is provided with a number ofrecesses 20 which, as will be readily recognized, follow the generalcontour of the side webs of the Master Gar Builders brass. The oppositerib 15 is provided on its rear face with a lug 21 that extends rearwardfrom the upper endv of the' section and rejects outward to a point inalinement with the rear face of the rib 17. p

The front face of each section is fiat as indicated at 255 in FLO'. e,and at 'one 'a forwardly projecting rib 24: of a thickness corres endingto the thickness of the lug K 21 an having its top terminating inanabrupt horizontal shoulder 25 that is arranged to engage a similarshoulder 26 at the base of the lug 21 of the next adjacent section. Theinner-most or active face of the rib 24 Projecting from the face 23 ofthe section is a lug 28 which will extend partly into thelarge centralrecess 20 formed in the rib 17 and Will cooperate with the Walls of thelat ter in shaping the side webs, while a corresponding lug 29, formedat the inner face of the rib 24 shapes the opposite side of the brass.Projecting from the bottom of the face 23 0f each section is a plate 31in the form of a flange, the outer edge of which conforms tothe angularrear face of the next adjacent Section and the thickness of this flangeis such that the lower shoulder 18l of the flange 17 of the nextadjacent sec tion will rest" thereagainst. Thev ilange 3.1 of eachsection will form the bottom of the mold and will also serve in part asa support for the next adjacent section in that lt receives the shoulder18 at the bottom of flange 17 of said next adjacent section, while atthe same time the shoulder 26 of the lug 21 of said adjacent sectionwill rest against the tcp shoulder 25 of the flange 24 of the firstsection. Secured to the flat front face ofeach section is a conveximember 36 which may be provided with suitable fastening de vices, as,for instance, pins 3,7 which enter corresponding sockets the flat facereferred to, and this member 36 is provided at the top with a forwardlyprojecting lug 38, the inner face of which is provided with a taperedgroove 39 which in combination with the tapered opening 40 at the top ofeach of the main sections constitute .a pouring gate through which themolten brass is poured in the casting Operation.

The rear face of each of the members .36 is provided at the top with aconcaved recess 4 .1 which also forms a part/cit .the gate running intothe next adjacent mold so that themembers 36 Will in ecet ,formpartitions to separate the severalgates from each other. The Section 36shown in Figs. l and 2 is provided with a smooth curved surface formingpart of a cylinder and of a shape corresponding te the concave face thatreceives 'the journal of the ear axle.

Where it is desired to form a concave face having grooves that is to sayto cast a self.- oiling brass, the Section B6 of the type shown in Figs.3 and 7 is substituted for the section 36. The member 36,*at `is of thesame general contour as the member 36 lexcept that its convex face isprovided with a plus rality ofribs 44 running in slightlhelical linesand ntersected bf'a longitu inal rib 4:5 that extends downward from thegatef` way lug 38e. These ribs form grooves in the bearing surface of'the brass in orderto perrmit ready feeding and passage of the lubricant.To make other type of self-oiling bearings, that is to say, bearings inwhich the brasses are rovided with perforations extending entireytherethrough, a number of tapered blocks @L7 may be attached to the backface of each section, as indicated in Fig. 6.

Where it is desired to form a lead-lined brass a number of sections Bb,36 ar-e substituted for the section 36 and these form the inner face ofthe brass of a substantially triangular contour and provide a relativelydeep rib as shown in Fig. e, the dotted lines in this case representingapproximately the cross sectional contour of the 'brass before theapplication of the lead.

After the brass has been cast, removed from the mold, and the gate cutaway in the usual manner, the brass is placed in a mold having thecylindrical member 36 in place and there will then be a space betweenthe inner face of the brass and the convex face of the member 86, andthis is filled with ead, Babbitt metal or other composition.

While the several sections 3 6, 36% etc., have been described asremovable and in` terchangeable it is obvious that they may be cast orotherwise formed integral -with the sections Where numbers of brasses ofprecisely the same type are Vto be made.

In practice any number of mold sections are assembled together in themanner shown in Figs. 1 and `2 and each has its independent gate throughwhich the brass is poured. The sections are held from independent ver.-tical and lateral play by reason of their intertting parts, While the sreading of the sections on the entrance o the molten metal may beprevented by the employment of any of the clam .ing devices ordinarilyused for holding mo d sections together.

1. In a mold 'of the class described, a series of like sections .eachhaving two oppo? site molding faces and provided with an interchangeablemember on one' of said faces for the formation of the concave faces ofVcar brasses, said members being provided at their upper ends with lugsshaped to form portions of the gates.

2. A mold section having a central vertical web, the rear face of thesection at o p0-l site sides of the web being provided wit inclinedfaces, the rear face of the web and the corresponding or alinin portionsof the faces being recessed, one o ysaid Vfaces have ing a projectingrib that terminates short ofthe bottom of the section and the other facebeing provided at the to with a pro-l jecting lug, the front.- face oeach section having-atfthe bottom an an "ar- `dange ar.-l ranged to yfitwithinthe angiiii rear face of an adjacent section, onel side of thefront face belng provided with a flange adapted to fit against the lugof a mating section, and an auxiliary member arranged to (it against thefront face of the web and to shape the concave face of the brass, theauxiliary member and the upper end of the central web being shaped toform independent gateways to adjacent mold spaces.

B. A movable mold formed of a series of like nesting sections having tWoopposite molding faces and provided With interitting ribs projectingfrom both said faces and each having an extension at it-s upper end, anda shaping member secured to the front face of each section and havin avertical lug at its upper end to bear against the extension of the upperend of the section and to coact therewith to provide gate-Ways to theadjacent molding spaces.

4L. A mold section having a central, vertical web, the rear face of thesection at op osite sides of the Web being provided With 1nclined faces,the rear face of the Web and the corresponding or alinin portions of thefaces being recessed, one o? said faces having a projectin rib thatterminates short of the bottom of te section and the other face beingprovided at the top With a projecting lug, the front face of eachsection having at the bottom an angular flange arranged to lit Withinthe angular rear face of an adjacent section, one side of the front facebeing provided with a flange adapted to fit against the lug of a mat-ingsection, and the upper end of the central Web being shaped to formindependent gateways to adjacent mold spaces.

In testimony that I claim the foregoing as my own, I have hereto aiiixedmy signature in the presence of tWo Witnesses.

GEORGE LINTGN HOFFER.

Witnesses:

GEO. Yarns, E. E. FERRELL.

